31144668 has 24 divisors (see below), whose sum is σ = 75831168. Its totient is φ = 9930096.

The previous prime is 31144661. The next prime is 31144681. The reversal of 31144668 is 86644113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56146 + ... + 56697.

It is an arithmetic number, because the mean of its divisors is an integer number (3159632).

Almost surely, 2^31144668 is an apocalyptic number.

It is an amenable number.

31144668 is an abundant number, since it is smaller than the sum of its proper divisors (44686500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31144668 is a wasteful number, since it uses less digits than its factorization.

31144668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112873 (or 112871 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 31144668 is about 5580.7408110393. The cubic root of 31144668 is about 314.6259707696.

The spelling of 31144668 in words is "thirty-one million, one hundred forty-four thousand, six hundred sixty-eight".